Supercritical Fluid Geochemistry in Geothermal Systems
Supercritical fluids exist in the roots of many active high-temperature geothermal systems. Utilization of such supercritical resources may multiply energy production from geothermal systems; yet, their occurrence, formation mechanism, and chemical properties are poorly constrained. Flow-through exp...
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ftdoajarticles:oai:doaj.org/article:53b29913a6f9438f9c2a621b37b88422 2024-09-15T18:14:07+00:00 Supercritical Fluid Geochemistry in Geothermal Systems Matylda Heřmanská Barbara I. Kleine Andri Stefánsson 2019-01-01T00:00:00Z https://doi.org/10.1155/2019/6023534 https://doaj.org/article/53b29913a6f9438f9c2a621b37b88422 EN eng Wiley http://dx.doi.org/10.1155/2019/6023534 https://doaj.org/toc/1468-8115 https://doaj.org/toc/1468-8123 1468-8115 1468-8123 doi:10.1155/2019/6023534 https://doaj.org/article/53b29913a6f9438f9c2a621b37b88422 Geofluids, Vol 2019 (2019) Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.1155/2019/6023534 2024-08-05T17:48:39Z Supercritical fluids exist in the roots of many active high-temperature geothermal systems. Utilization of such supercritical resources may multiply energy production from geothermal systems; yet, their occurrence, formation mechanism, and chemical properties are poorly constrained. Flow-through experiments at 260°C and 400-420°C were performed to study the chemical and mineralogical changes associated with supercritical fluid formation near shallow magmatic intrusions by conductive heating and boiling of conventional subcritical geothermal fluids. Supercritical fluids formed by isobaric heating of liquid geothermal water had similar volatile element concentrations (B, C, and S) as the subcritical water. In contrast, mineral-forming element concentrations (Si, Na, K, Ca, Mg, and Cl) in the supercritical fluid were much lower. The results are consistent with the observed mineral deposition of quartz, aluminum silicates, and minor amount of salts during boiling. Similar concentration patterns have been predicted from geochemical modeling and were observed at Krafla, Iceland, for the IDDP-1 supercritical fluid discharge. The experimental results confirm previous findings that supercritical fluids may originate from conductive heating of subcritical geothermal reservoir fluids characterized by similar or lower elemental concentrations with minor input of volcanic gas. Article in Journal/Newspaper Iceland Directory of Open Access Journals: DOAJ Articles Geofluids 2019 1 14 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 |
spellingShingle |
Geology QE1-996.5 Matylda Heřmanská Barbara I. Kleine Andri Stefánsson Supercritical Fluid Geochemistry in Geothermal Systems |
topic_facet |
Geology QE1-996.5 |
description |
Supercritical fluids exist in the roots of many active high-temperature geothermal systems. Utilization of such supercritical resources may multiply energy production from geothermal systems; yet, their occurrence, formation mechanism, and chemical properties are poorly constrained. Flow-through experiments at 260°C and 400-420°C were performed to study the chemical and mineralogical changes associated with supercritical fluid formation near shallow magmatic intrusions by conductive heating and boiling of conventional subcritical geothermal fluids. Supercritical fluids formed by isobaric heating of liquid geothermal water had similar volatile element concentrations (B, C, and S) as the subcritical water. In contrast, mineral-forming element concentrations (Si, Na, K, Ca, Mg, and Cl) in the supercritical fluid were much lower. The results are consistent with the observed mineral deposition of quartz, aluminum silicates, and minor amount of salts during boiling. Similar concentration patterns have been predicted from geochemical modeling and were observed at Krafla, Iceland, for the IDDP-1 supercritical fluid discharge. The experimental results confirm previous findings that supercritical fluids may originate from conductive heating of subcritical geothermal reservoir fluids characterized by similar or lower elemental concentrations with minor input of volcanic gas. |
format |
Article in Journal/Newspaper |
author |
Matylda Heřmanská Barbara I. Kleine Andri Stefánsson |
author_facet |
Matylda Heřmanská Barbara I. Kleine Andri Stefánsson |
author_sort |
Matylda Heřmanská |
title |
Supercritical Fluid Geochemistry in Geothermal Systems |
title_short |
Supercritical Fluid Geochemistry in Geothermal Systems |
title_full |
Supercritical Fluid Geochemistry in Geothermal Systems |
title_fullStr |
Supercritical Fluid Geochemistry in Geothermal Systems |
title_full_unstemmed |
Supercritical Fluid Geochemistry in Geothermal Systems |
title_sort |
supercritical fluid geochemistry in geothermal systems |
publisher |
Wiley |
publishDate |
2019 |
url |
https://doi.org/10.1155/2019/6023534 https://doaj.org/article/53b29913a6f9438f9c2a621b37b88422 |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Geofluids, Vol 2019 (2019) |
op_relation |
http://dx.doi.org/10.1155/2019/6023534 https://doaj.org/toc/1468-8115 https://doaj.org/toc/1468-8123 1468-8115 1468-8123 doi:10.1155/2019/6023534 https://doaj.org/article/53b29913a6f9438f9c2a621b37b88422 |
op_doi |
https://doi.org/10.1155/2019/6023534 |
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Geofluids |
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2019 |
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1 |
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14 |
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1810451894448947200 |